DE206182C - - Google Patents

Description

IMPERIAL

PATENT OFFICE

The subject of the invention is "a device on primary or secondary cells, through which an automatic, lasting Movement of the electrolyte, and thereby an increase in performance is brought about.

The innovation is that the previously in some cases as ascending channels formed spaces between the

ίο electrodes by inclining the channels forming ribs or only the electrodes are formed into upwardly narrowing channels. By making this narrowing going in the direction of the ascending gas bubbles, arises after the upper end of the channels or spaces to a compression of the vesicles and thereby a swelling or entrainment of the Electrolytes, which movement is then communicated to all the fluid in the cell.

By arranging special tubular extensions of the electrode spaces With the help of the above device one is almost to the bottom of the cell in the Position, the part that usually remains on the ground is more concentrated electrolytes to keep mixed with the rest of the liquid.

In the drawing, the subject of the invention is shown in several exemplary embodiments Brought to mind.

In one embodiment of the invention, shown in FIGS. 1 and 2, two electrodes, one positive, P, and one negative, N, in a cell B are drawn. These electrodes 40

45

carry on their surface two or more vertical and parallel ribs R and grooves E between them and are designed, for. B. thicker towards the top that their distances from each other or from the separating wall S, which can be porous, made of clay or other material and lies on the ribs, decrease from the bottom or inlet I to the tip or outlet O. .

The . Electrodes and partition walls are expediently held in their mutual position by elastic bands or the like and supported in cell B in any suitable manner.

The more concentrated electrolyte located under the electrodes is passed after the inlets J through an extension L , which consists of a tubular structure and extends down to near the bottom of the cell. The arrows indicate the circulation of the electrolyte.

Instead of tapering the plates or making them conical, as in the section in Fig. 2 is shown, the ribs on the surface can be inclined.

Instead of placing the electrode surfaces at an angle, the partition walls 5 can also be beveled or covered with slanted strips of ebonite or other suitable materials. In this latter case, the electrodes have flat surfaces. But you can narrowing channels also partly due to the appropriately designed electrodes and partially form through the partitions.

Fig. 3 is a section of three flat electrode plates, one of which is positive, P,

is inclined to the two negative, N, at the top and the bottom. The electrodes are separated and held in position by two or more independent separating strips S ¹ , which narrow towards the top, so that narrowing channels E arise between the electrodes. The separating strips S ¹ are compressed rubber bands o. The like. In their

ίο kept location. The approach for the supply of the lower electrolyte layers to the channels between the separators S ¹ is shown at L.

Fig. 4 is a section of three electrodes N, P, N with separators S between them. The middle electrode P is stronger at the tip and narrows towards the bottom, while the boundary surfaces of the two outer electrodes N, N are parallel to one another.

In Fig. 5 separators S ² or ribs are shown between or on the electrodes, which enclose or form upwardly narrowing channels. Between the electrodes, the middle channel is widest at the bottom or inlet I and narrowest at the tip or outlet O, while the side channels are narrow at the bottom or inlet / and furthest at the top or outlet O. The dotted lines show the ribs or separators inclined in the opposite direction between the adjacent electrodes. The middle channel E is again extended under the electrodes by an extension L , which is attached to the separators S ² and the electrodes and, in addition to the lower inlet L ¹ and other lower openings, is also provided with lateral holes for the purpose of circulating the To secure liquid even if the floor is covered with waste from the electrodes.

The by the action of the electric

The gases formed between the electrodes rise and crowd towards the tip and the outlet of the converging channel E , push the electrolyte located there in front of them and suck in new ones from below. They cause the liquid to rise from the lowest part of the cell through the extension L ¹ to the upper part and the outlet O. In this way an energetic circulation is created which mixes all the liquid in the cell.

The liquid rises through the outlet O and pours _{through the separators S 2} into the wide openings of the adjacent channels. The volume of the central channel E can be approximately equal to that of the adjacent channels.

Fig. 6 is a vertical cross section according to Fig. 5 showing the modified shape of the conductor L between two of the electrodes NP with perforations on the sides and the bottom.

Fig. 7 is a horizontal cross-section of an embodiment with the ribs R forming parts of the electrodes N and P , and Fig. 8 is a horizontal cross-section of Fig. 5, the independent separator S ² made of strips or bars of ebonite or other material shows. These channels, electrodes and separators are held in position as previously described.

Fig. 9 is a section illustrating tubular conduits or channels E which are formed on the surfaces of the electrodes by two pairs of ribs or separators S ² , S ² and which are arranged so that the outlet O of the central channel E is deeper lies as the outlet O ¹ at the top of the channel formed by the outer ribs or separators.

The separators S ² and the extension L shown in Fig. 9 are preferably made of one piece which is detachable and secured in place by elastic straps as described above.

Fig. 10 is a section of three electrodes N and P in which the channels are formed by separators S ³ , S ³ . The electrodes are parallel for the greater part of their length; the outlets O are narrowed and conical at the tip.

Figure 11 is a horizontal cross-section and Figure 12 is a sectional elevation and isometric view of a cylindrical embodiment of the electrodes. The central electrode P, preferably the positive one, is conical in shape, and in connection with the porous separator or cell 5 and the conical ribs R and R ¹ , respectively, annular and conical channels E are formed which are wide at the bottom or inlet I. and are narrowed at the tip or outlet O. A conically shaped additional channel is shown in FIG. 3, in the middle at C. This forms the return path for the liquid rising in the channels on the outside. The central electrode is supported by the foot G.

An outer cylindrical electrode N, decreasing in thickness downwards, supported on the foot G ¹ , forms channels or lines E ¹ with the porous cell S and the ribs R.

Instead of the porous cell S, a permeable separator, e.g. B. use a perforated ebonite tube 5 (Fig. 13), the ribs or 'projections S ⁴ , S ⁴ , while the electrodes are smooth. But you can also use corrugated perforated material or strips as a separating means between the two electrodes. The two rows of conical lines or channels E, E ¹ then form a conical-annular channel.

The device forming the subject of the invention. is suitable for secondary batteries, In particular, it is intended for batteries in which metal, e.g. zinc, is dissolved and later deposited, and also for electrical plating processes and for primary batteries.

Claims (2)

Patent Claims: ίο i. Primary or secondary element with the circulation of the electrolyte favoring channels between the electrodes, characterized in that these channels narrow upwards. 2. primary or secondary element according to claim i, characterized in that through the upwardly narrowing channels provided between the electrodes suitable, e.g. B. attached to the electrodes approaches to close to the bottom of the cell are extended to also the to draw heavier layers of the electrolyte stored here into the fluid circulation. For this purpose ι sheet of drawings.